Home
Class 11
PHYSICS
why does the free surface of a liquid at...

why does the free surface of a liquid at rest behave like a stretched elastic membrane?

Promotional Banner

Topper's Solved these Questions

  • Mechanical Properties of fluids

    SL ARORA|Exercise Exercise|459 Videos
  • Mathematical tools

    SL ARORA|Exercise Exercise|20 Videos
  • Mechanical Properties of Solids

    SL ARORA|Exercise Example|113 Videos

Similar Questions

Explore conceptually related problems

...........is the property by virtue of which the free surface of the liquid at rest behaves like a stretched elastic membrane tending to contract to occupy minimum surface area.

Why does a liquid surface behave like a stretched membrane ?

Surface tension is the property of a liquid by virtue of which free surface of liquid at rest tries to have minimum surface area. In doing so, the free surface of liquid at rest behaves as if it is covered with a stretched membrane. Surface tension (S) of a liquid is measured by from (F) acting on unit length fo a line (l) imagined to be drawn tangentially anywhere on the free surface i.e., S = (F)/(l). S is measured in N m^(-1) Read the above passage and answer the following question : (i)What is the cause of surface tension ? (ii) A wire ring of 30 mm diameter resting flat on the surface of a liquid is raised. The pull required is 1.5 gf more before the film breaks then it is after. What is surface tension of the liquid ? (iii) What are the implication of this phenomenon in day to day life ?

Free surface of a liquid behaves like a stretched membrane and tends to assume smallest possible area due to

Surface tension is the property of a liquid by virtue of which the free space of the liquid at rest tends to have minimum area and as such it behaves as if covered with a stretched membrane. It is measured as the force acting an unit length of a line imagined to be drawn tangentially anywhere on the free surface of liquid at rest. It acts at right angles to this line on both sides and along the tangent to the liquid surface. When a razor bladed floats on water, then the force of surface tension acts on the circumference of the blade acting tangentially to the liquid surface : (a) True (b) False

Surface tension is the property of a liquid by virtue of which the free space of the liquid at rest tends to have minimum area and as such it behaves as if covered with a stretched membrane. It is measured as the force acting an unit length of a line imagined to be drawn tangentially anywhere on the free surface of liquid at rest. It acts at right angles to this line on both sides and along the tangent to the liquid surface. Raindrops are spherical in shape because each drop tends to acquire maximum surface area : (a) True (b) False

Surface tension is the property of a liquid by virtue of which the free space of the liquid at rest tends to have minimum area and as such it behaves as if covered with a stretched membrane. It is measured as the force acting an unit length of a line imagined to be drawn tangentially anywhere on the free surface of liquid at rest. It acts at right angles to this line on both sides and along the tangent to the liquid surface. The iron needle will floats on clean water but sink when some detergent is added to this water (a) True (b) False

A liquid cannot withstand a shear stress. How does this impty that the surface of a liquid at rest must be level, i.e., normal to the gravitational force?

Surface tension is the property of a liquid by virtue of which the free space of the liquid at rest tends to have minimum area and as such it behaves as if covered with a stretched membrane. It is measured as the force acting an unit length of a line imagined to be drawn tangentially anywhere on the free surface of liquid at rest. It acts at right angles to this line on both sides and along the tangent to the liquid surface. Surface tension is a scalar quantity : (a) True (b) False

Statement - 1 : The free surface of a liquid at rest with respect to stationary container is always normal to the overset(-)g_(eff) . Statement - 2 : Liquids at rest cannot have shear stress.

SL ARORA-Mechanical Properties of fluids-Exercise
  1. why does the free surface of a liquid at rest behave like a stretched ...

    Text Solution

    |

  2. Find the pressure exerted at the tip of a drawing pin if it is pushed ...

    Text Solution

    |

  3. Atmospheric pressure is nearly 100 kPa. How large the force does the a...

    Text Solution

    |

  4. The force on a Phonograph needle is 1.2 N. the point has a circular cr...

    Text Solution

    |

  5. A cylinderical vessel contaning liquid is closed by a smooth piston of...

    Text Solution

    |

  6. The area of the smaller piston of a hydraulic press is 1cm^2 and that ...

    Text Solution

    |

  7. The average mass that must be lifted by a hydraulic press is 80 "kg".I...

    Text Solution

    |

  8. In a hydraulic press used for compressing cotton the area of the pisto...

    Text Solution

    |

  9. An automobile sack is lifted by a hydraulic jack that consists of two ...

    Text Solution

    |

  10. How much will a body of 70 N weight in water if it displaces 20 ml of...

    Text Solution

    |

  11. A solid weighs 6 kg in air. If its density is 2000 "kg" m^(3) what wil...

    Text Solution

    |

  12. A solid weighs 10 N in air. Its weight decreases by 2 N when weighed i...

    Text Solution

    |

  13. A copper cube of mass 0.50kg is weighed in water. The mass comes out t...

    Text Solution

    |

  14. A solid floats in water with 3//4 of its volume below the surface of w...

    Text Solution

    |

  15. A piece of wood of relative density 0.25floats in a pail containing oi...

    Text Solution

    |

  16. A boat having a length of 3 m and breadth of 2 m is floating on a lake...

    Text Solution

    |

  17. When a body of mass 240 kg is placed on a ice berg floating in sea wat...

    Text Solution

    |

  18. A cubical block of wood 10 cm on a side floats at the interface betwee...

    Text Solution

    |

  19. A Piece of brass (alloy of zinc and copper) weighs 12.9 g in air. When...

    Text Solution

    |

  20. A piece of iron floats in mercury. Given that the density of iron is 7...

    Text Solution

    |

  21. A metal cube of 5cm side and relative density 9 is suspended by thread...

    Text Solution

    |